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E. Niazi; E. Abounouri
Volume 17, Issue 2, September 2006, Pages 201-220
F. Shirdel
Volume 16, Issue 1, June 2005, Pages 185-192
By: J.M. Still; Translated by: A. Moradmand
Volume 15, Issue 4, March 2005, Pages 7-16
K. Kousha